Verbena plants, also called vervain, are commonly grown as annual hybrid flower bed plants and low trailers with dark green elongated leaves with toothed edges. They only grow as hardy perennials, coming back year after year, in zones 8 to 11. Their colorful flowers continuously bloom from spring to fall and grow best with eight to ten hours of full sun, moderately moist, well-drained soil, and good air circulation between plants.
